/**
* Copyright 2016 Yahoo Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.yahoo.pulsar.broker.web;
import java.io.IOException;
import java.util.concurrent.Semaphore;
import org.eclipse.jetty.io.EndPoint;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;
import org.eclipse.jetty.util.ssl.SslContextFactory;
public class PulsarServerConnector extends ServerConnector {
// Throttle down the accept rate to limit the number of active TCP connections
private final Semaphore semaphore = new Semaphore(10000);
/**
* @param server
* @param acceptors
* @param selectors
*/
public PulsarServerConnector(Server server, int acceptors, int selectors) {
super(server, acceptors, selectors);
}
/**
* @param server
* @param acceptors
* @param selectors
* @param sslContextFactory
*/
public PulsarServerConnector(Server server, int acceptors, int selectors, SslContextFactory sslContextFactory) {
super(server, acceptors, selectors, sslContextFactory);
}
@Override
public void accept(int acceptorID) throws IOException {
try {
semaphore.acquire();
super.accept(acceptorID);
} catch (InterruptedException e) {
throw new IOException(e);
}
}
@Override
protected void onEndPointClosed(EndPoint endp) {
semaphore.release();
super.onEndPointClosed(endp);
}
}